Best Public Schools in Stony Brook, NY

Summary:

The city of Stony Brook, New York is home to two schools: Robert Cushman Murphy Junior High School, a middle school, and William Sidney Mount Elementary School, an elementary school. Both schools are part of the Three Village Central School District, which is ranked 157 out of 874 districts in New York and has a 4-star rating from SchoolDigger.

Robert Cushman Murphy Junior High School stands out for its consistently high performance on state assessments, with proficiency rates exceeding the district and state averages in many subject areas. The school is particularly strong in Regents exams, with 100% proficiency in Algebra II, Geometry, and Algebra I. Additionally, the school has a relatively low chronic absenteeism rate of 31.5% compared to the district and state, and it spends a high amount of $40,727 per student.

While William Sidney Mount Elementary School has solid performance on state assessments, often meeting or exceeding the district and state averages, it has a higher free and reduced lunch rate of 20.04%, indicating a more economically diverse student population. The school has maintained a consistent 4-star rating from SchoolDigger in the past three school years, but it spends significantly less per student at $32,913 compared to the middle school.

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Immunizations Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				Regents Common Core Algebra II (2025)	Regents Common Core Geometry (2025)	Regents Earth Science (2025)	Regents Living Environment (2025)	Regents Algebra I (2025)	NY State Assessments English Language Arts (2025)						NY State Assessments Math (2025)						NY State Assessments Science (2025)		% Completely Immunized (2020)	% Polio (2020)	% Measles (2020)	% Mumps (2020)	% Rubella (2020)	% Diphtheria (2020)	% Hepatitis B (2020)	% Varicella (2020)	Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	Regents Common Core Algebra II End of Course	Regents Common Core Geometry End of Course	Regents Earth Science End of Course	Regents Living Environment End of Course	Regents Algebra I End of Course	NY State Assessments English Language Arts 3rd Grade	NY State Assessments English Language Arts 4th Grade	NY State Assessments English Language Arts 5th Grade	NY State Assessments English Language Arts 6th Grade	NY State Assessments English Language Arts 7th Grade	NY State Assessments English Language Arts 8th Grade	NY State Assessments Math 3rd Grade	NY State Assessments Math 4th Grade	NY State Assessments Math 5th Grade	NY State Assessments Math 6th Grade	NY State Assessments Math 7th Grade	NY State Assessments Math 8th Grade	NY State Assessments Science 5th Grade	NY State Assessments Science 8th Grade	% Completely Immunized All Grades	% Polio All Grades	% Measles All Grades	% Mumps All Grades	% Rubella All Grades	% Diphtheria All Grades	% Hepatitis B All Grades	% Varicella All Grades	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Robert Cushman Murphy Junior High School	Public	7-9	351 Oxhead Rd	Stony Brook	11790	Suffolk County	Three Village Central School District	No	No	No	No	(631) 730-4800	655	65	10.0	21.2%	388 (59.2%)	18 (2.7%)	96 (14.7%)	123 (18.8%)	0 (0.0%)	0 (0.0%)	30 (4.6%)	66.2	448^th of 1500 public middle schools	70.1%		68.6	395^th of 1504 public middle schools	73.7%	53	100.0	100.0	96.9	99.0	94.3					63.8	63.9					65.7	27.9		42.6	98.9	99.0	100.0	100.0	100.0	99.0	99.9	100.0	$42,018	$554	$41,464
William Sidney Mount Elementary School	Public	PK, KG-6	50 Dean Ln	Stony Brook	11790	Suffolk County	Three Village Central School District	No	No	No	No	(631) 730-4300	525	40	13.0	20.4%	289 (55.0%)	6 (1.1%)	74 (14.1%)	128 (24.4%)	0 (0.0%)	0 (0.0%)	28 (5.3%)	67	764^th of 2445 public elementary schools	68.8%		70.3	632^nd of 2445 public elementary schools	74.2%	132						54.2	47.1	66.0	71.1			65.6	68.0	66.1	68.1			66.7		97.8	98.2	100.0	100.0	100.0	98.6	99.8	99.4	$33,240	$624	$32,616

Cities Near Stony Brook

City	Distance	# of Schools	Statewide Rank
East Setauket	1.05 mi	4	80^th
Saint James	2.17 mi	4	157^th
Setauket	2.36 mi	2	63^rd
Centereach	2.84 mi	8	672^nd
Lake Grove	2.85 mi	3	509^th

See the top NY New York cities

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau, the WNYC and the New York State Department of Health and the NY State Education Department.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.